19788717

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{1697}}^1$

素因数の和:1749

約数の個数: 24

約数和(自身を含む): 29830464

約数和(自身を除く): 10041747

約数列:

[1, 3, 13, 23, 39, 69, 169, 299, 507, 897, 1697, 3887, 5091, 11661, 22061, 39031, 66183, 117093, 286793, 507403, 860379, 1522209, 6596239, 19788717]

約数ペア:

[(1, 19788717), (3, 6596239), (13, 1522209), (23, 860379), (39, 507403), (69, 286793), (169, 117093), (299, 66183), (507, 39031), (897, 22061), (1697, 11661), (3887, 5091)]